Stencil for convex surfaces



Feb. 22,1927;

. J. G. NIEDERER STENCIL FOR CONVEX SURFACES Filed July 1926 I/VVE/V 747R,

/ZWW% l Patented Feb. 22, 1927.

UNITED STATES JOHN GEORGE NIEDERER, or HAMILTON, ONTARIO, CANADA.

STENCIL FOR CONVEX SURFACES.

Application filed July 15,

My invention relates to a stencil for convex surfaces such as electric light bulbs and the like and the object of the invention is to provide a novel apparatus for stenciling these bulbs whereby any desired artistic design may be very quickly, conveniently and inexpensively placed thereon.

'My invention consists in the construction, all as hereinafter more particularly delo scribed and illustrated in the accompanying drawings in which:-'

Fig. 1 is a side elevation of an electric light bulb showing my improved stencil attached thereto preparatory to marking the bulb.

Fig. 2 is a view of Fig. 1 looking in the direction of the arrow.

Fig. 3 is a view of an electric light bulb having a design marked thereon. In the drawings, like characters of reference indicate corresponding parts in the different views.

My invention is applicable to any electric light bulb 1 the socket engaging shank of the bulb being indicated by the numeral 2.

My invention consists of a metallic shield 3 which is of similar curvatureto that of i the bulb 1 and is adapted to cover a portion of the surface of the bulb.

A portion of the shield 3 is cut out at 4: to any desired design.

The shield 3 carries a spring clip 4 which clip is adapted to be slipped onto the shank 2 and to grip-said shank.

l/Vhen the clip 4 is engaged upon the shank 2 the shield 3 is supported from the shank in such a manner as to be spaced slightly away from the surface of the bulb 1, which space is indicated by the numeral'5 in Fig. 2.

The bulb is marked by spraying a suitable paint or marking fluid through the opening 4; in the shield 3 and'due to the spacing of 1926. Serial No. 122,644.

the shield away from the surface of the bulb I a very pleasing indefinite border is given to the design upon the surface of the bulb.

more artistic effect to be obtained than 1 where a sharply defined border is given to the design as would be the case Wereithe shield to lie closely upon the surface of the bulb. r

Bythe use of my improved shield any desired artistic design may be .very rapidly and conveniently applied to any convex surface such as an electric light bulb.

lVhile I have shown and described my invention in connection with an electric light bulb it could be equally well used in connection with other convex surfaces.

From the foregoing it will be apparent that I have devised an improved method of. stencilling such surfaces whereby the objects of my invention have been obtained.

lVhat I claim as my invention is:

1. Thecombination with an electric light bulb and the socket engaging shank thereof, of a shield of similar curvature to that of the bulb adapted to cover a portion of said bulb said shield having a portion thereof f cut out to a desired design, ,a spring clip carried by said shield and adapted to grip said shank for supporting sald shield over said bulb. r

2. The combination with an electric light bulb and the socket engaging shank thereof, of a shield of similar curvature tothat of the bulb adapted to cover a portion of said JOHN GEORGE IEDERER. 

